单项选择题
Most lecturers find it
expedient
to use notes when addressing to graduate students.
A．troublesome
B．expensive
C．useful
D．improper
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单项选择题
Prior to his appointment as foreign minister, Mr. Li was the vice minister of foreign affairs.
A．After
B．Before
C．During
D．Previous
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单项选择题
Woman: How did Ellen do on her math test Man: She passed it with flying colors. Question: What is the man saying about Ellen
A．Now Ellen can fly a plane.
B．Ellen had a wonderful score on her test.
C．Ellen had a narrow pass.
D．Ellen hates mat
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